Inventories (Tables)

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Inventory Components

Inventories consisted of the following:

	March 31, 2020			December 31, 2019
Raw materials	$	16,631		$	13,514
Supplies and service parts	24,133			21,840
Finished products	35,156			36,969
Inventory at FIFO cost	75,920			72,323
Excess of FIFO cost over LIFO cost	(4,072		)	(4,072		)
Total inventory, net	$	71,848		$	68,251